If you're an educator and you notice that your students have been getting this error message when trying to login, it means that you have not completed the last step necessary to sync your classroom.
Please do the following to finish the Clever classroom sync process:
Login to the Peekapak website and click on the "Classroom Settings" tab.
Click on the "+ Clever Classroom button" to begin syncing your Clever classrooms.
After you've finished syncing your classrooms, your students will now be able to login using their Clever credentials.